Attempt to commit a crime; punishment.
An attempt to commit a crime is a:
1. Class A-I felony when the crime attempted is the A-I felony of murder in the first degree, aggravated murder as defined in subdivision one of section 125.26 of this chapter, criminal possession of a controlled substance in the first degree, criminal sale of a controlled substance in the first degree, criminal possession of a chemical or biological weapon in the first degree or criminal use of a chemical or biological weapon in the first degree;